Magellan: KDE Personal Information Manager

Magellan is a KDE-based alternative to Evolution. It is a personal
information manager handling email, contacts, notes, tasks, to do
lists, and journals. For email it supports mail retrieval via POP3,
IMAP4, and local mailboxes. An interesting feature is that it supports
mixed-mode POP3 and IMAP4 accounts where each account can be a
completely different identity (e.g., if you have multiple email
accounts on different servers with different usernames).